The Adventures of Sinbad - The Curse of the Gorgons

Sinbad and crew come to aid of villagers whose firstborn sons are being enslaved by the three Gorgon sisters: Euryale, Stheno and Medusa, to work in their jasper mine.
Everybody who disobey the Gorgons will be turned to stone, happen to a slave and a henchman.
At the end of the episode Medusa will defeat by the mirror trick, turning herself to stone.